2. Below is the sample photo of the back of the printer that support LAN interface.

EPSON Ethernet cards Type IV (UB-E03)

3. To configure the Epson printer:

See attached file: How_To_Configure_Epson Printer.pdf

Note: Configure page might be different on each model.

4.In case you need to reset the Network Adapter

You can reset the Ethernet Interface card to factory defaults by holding
down the push button on the RESET button (see above) while turning on the printer
power and continuing to hold it down for 5 seconds. This causes all internal settings to return to their factory defaults.